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North Dakota Water Quality
128
Utilities in database
0.7M
Residents served
48%
On private wells
2
Key contaminants tracked
Drinking Water in North Dakota
North Dakota has 128 community water systems serving approximately 0.7 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead. 48% of North Dakota residents rely on private wells. NDDoH holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in North Dakota
1–25 of 128City of Fargo
ND0900336 · 120,762 served
City of Bismarck
ND0800080 · 72,417 served
Grand Forks Regional Wtp
ND1800410 · 57,339 served
City of Minot
ND5100660 · 48,743 served
City of West Fargo
ND0900999 · 34,858 served
City of Williston
ND5301012 · 26,426 served
City of Dickinson
ND4500242 · 25,679 served
City of Mandan
ND3000596 · 21,769 served
City of Jamestown
ND4700498 · 15,427 served
South Central Rwd North Burleigh
ND0801502 · 10,400 served
Southwest Water Authority
ND4501434 · 8,537 served
City of Wahpeton
ND3900973 · 7,766 served
North Prairie Rwd-system 1&2
ND5101125 · 7,748 served
City of Devils Lake
ND3600231 · 7,141 served
City of Valley City
ND0200958 · 6,585 served
City of Watford City
ND2700990 · 6,390 served
East Central Regional Wd-gf
ND1801062 · 5,995 served
Stutsman Rural Water District
ND4701303 · 5,550 served
Greater Ramsey Water District
ND3601424 · 5,280 served
Northwest Rural Water District
ND5301079 · 5,102 served
Barnes Rural Water District
ND0201058 · 4,938 served
Missouri West Water System
ND3001431 · 4,303 served
City of Grafton
ND5000408 · 4,284 served
City of Lincoln
ND0800570 · 4,257 served
Cass Rural Water District Fargo
ND0901483 · 4,242 served
Key Contaminant Concerns in North Dakota
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
North Dakota Water FAQs
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Data source: Utility data from EPA SDWIS. 128 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-24